Barlow's law applications

[laithrahim]

i am new to barlow's law,
we are trying to determine the min wall thickness of HDPE bottle utilizing Barlow's law we would like to hear your comments on such approach is it valid to use such equation to our purpose also we would like to know what does design stress mean in barlow's law and how can we calculate it or obtain it

thanks a lot

 

[LittleInch]

Could you just seal the machine that final seals the bottle in a room where you overpressure at least part way towards sea level. The difference in pressure is about 100 mbar - even if you can only do 50mbar with some interlocking doors etc, this could be a way around the issue?

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

[rb1957]

that could be a tamper-proof feature

Quando Omni Flunkus Moritati

 

[rb1957]

funnily enough a simmilar thing showed up in an aircraft design. a current aircraft design, composite structure, has the manufacturing facility at altitude. somewhere along the line (you'd hope reasonably early on) they realised that the facility can't develop the pressure requirement to manufacture the composite panels. the program was delayed years by this; presumably developing new allowbles, or new equipment (to pressurise the panel before vaccuum bagging).

if you know what plane i'm talking about, i know too (intentionally not mentioning it).

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